Chen, F. X. (2018). On the generalization of some Hermite – Hadamard inequalities for functions with convex absolute values of the second derivatives via fractional integrals. Ukrains’kyi Matematychnyi Zhurnal, 70(12), 1696-1706. Retrieved from https://umj.imath.kiev.ua/index.php/umj/article/view/1668